From patchwork Thu Apr 6 06:19:05 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Badhri Jagan Sridharan X-Patchwork-Id: 13202882 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id F2985C77B6C for ; Thu, 6 Apr 2023 06:19:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235176AbjDFGTN (ORCPT ); Thu, 6 Apr 2023 02:19:13 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57352 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229709AbjDFGTM (ORCPT ); Thu, 6 Apr 2023 02:19:12 -0400 Received: from mail-yw1-x1149.google.com (mail-yw1-x1149.google.com [IPv6:2607:f8b0:4864:20::1149]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A22468A6D for ; Wed, 5 Apr 2023 23:19:11 -0700 (PDT) Received: by mail-yw1-x1149.google.com with SMTP id 00721157ae682-545dd1a1e31so330729437b3.22 for ; Wed, 05 Apr 2023 23:19:11 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; t=1680761951; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=Z/f7k2pCQfyKc9i/c1APoOdFbnqMktgzwaYI9MvzI7I=; b=HC1tvqen+SYVHhiRrMODrf/6S8bdwKpI+yt4teqebTIbY0JBmRRXhr20JjZXktd3I4 F66rfE2Is4Qu9p1TfNS5iCUeIomqVNB5B9pfoUwHBcCe+jCtE7iHW5NSO/+DU9mThwEk 9snHuN8YGSee2wvz2Idm7U2+wqV2Qy6ssaFNI2sxaEpMba45OPyqNDWImo6Sc/5k2KUf 9YeX2q7D783NI+HlWIJdrk66Ki4oVoLI+Yut4ZYAW8I5mOz/EnuJviU0CWGco3MFDl4j LamLj+bt8zhJrkna8q8FVBQVM9Y7sh9ay6CfAJm7DUKZTK1obcEHq/hZzxoh66/Oqtdg FuNQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; t=1680761951; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=Z/f7k2pCQfyKc9i/c1APoOdFbnqMktgzwaYI9MvzI7I=; b=OccHYScRRdz1eFqjxEcSh1Sow40O9HjTlcUGv4zhQLLVZhVgh+6raXJ7Cwhgn7PQ8W h9Sviiex5OD4xix3JifTGprs1qABDJrckK/LCNKFVu0RUZcBN09O66oe9UPDIztjtonJ +M0OdytOajitSgb1CGaEXn4hKPM6DersOY6JLJnVJjf3KrNsGm4XQiQBLfVwWXUHX+ct R57rYDNrB6bFzRIye2AcFN8Ps1ah8pTk2LS10U+UYea/1q7O/wdQ1CthkKLxLtzBptnR Bs42doigXXuGmKZLkDwT9yu/Wb2W4mtT6IrVab4/I7ExSoadlTG2bL0I47efFirdNYYn Ubww== X-Gm-Message-State: AAQBX9emxBZY11F+83YeCI3QsAofQmLHx7l7kiu4ThUzQn+jFO3h0XYp 03swFmQgoDvOXj7bQTzITFMUt7V2XZI= X-Google-Smtp-Source: AKy350Z27oP6FQknZlBJY3VEEuuN5Fbe6TE3Go6ZF49WVR2vlInKkeeEI2A8kAjBmcEm+hNGu+IRXRCtHaY= X-Received: from badhri.c.googlers.com ([fda3:e722:ac3:cc00:7f:e700:c0a8:6442]) (user=badhri job=sendgmr) by 2002:a25:cf88:0:b0:b8b:f1ac:9c6c with SMTP id f130-20020a25cf88000000b00b8bf1ac9c6cmr1399315ybg.3.1680761950871; Wed, 05 Apr 2023 23:19:10 -0700 (PDT) Date: Thu, 6 Apr 2023 06:19:05 +0000 In-Reply-To: <20230406061905.2460827-1-badhri@google.com> Mime-Version: 1.0 References: <20230406061905.2460827-1-badhri@google.com> X-Mailer: git-send-email 2.40.0.348.gf938b09366-goog Message-ID: <20230406061905.2460827-2-badhri@google.com> Subject: [PATCH v1 2/2] usb: gadget: udc: core: Prevent redundant calls to pullup From: Badhri Jagan Sridharan To: gregkh@linuxfoundation.org, stern@rowland.harvard.edu, colin.i.king@gmail.com, xuetao09@huawei.com, quic_eserrao@quicinc.com, water.zhangjiantao@huawei.com, peter.chen@freescale.com, balbi@ti.com Cc: linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, stable@vger.kernel.org, Badhri Jagan Sridharan Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org usb_gadget_connect calls gadget->ops->pullup without checking whether gadget->connected was previously set. Make this symmetric to usb_gadget_disconnect by returning early if gadget->connected is already set. Cc: stable@vger.kernel.org Signed-off-by: Badhri Jagan Sridharan Fixes: 5a1da544e572 ("usb: gadget: core: do not try to disconnect gadget if it is not connected") --- drivers/usb/gadget/udc/core.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/usb/gadget/udc/core.c b/drivers/usb/gadget/udc/core.c index 890f92cb6344..7eeaf7dbb350 100644 --- a/drivers/usb/gadget/udc/core.c +++ b/drivers/usb/gadget/udc/core.c @@ -708,6 +708,9 @@ int usb_gadget_connect(struct usb_gadget *gadget) goto out; } + if (gadget->connected) + goto out; + if (gadget->deactivated) { /* * If gadget is deactivated we only save new state.